So...I used 3 1/4 finish nails, it is power brushed (wire wheel). I used Johnson's paste wax and a rag to finish. I used four nails, twice twisted then opened. As for getting the bean in...well, if you really want to make these, well, that's part of the joy of blacksmithing (solving a problem). When you discover the answer you will also discover it's absolute simplicity. The bean is a Jacobs cattle bean. We have been growing them for years on our farm, with the same seed stock (open pollinated).